Index: include/llvm/DebugInfo/CodeView/TypeRecordMapping.h
===================================================================
--- include/llvm/DebugInfo/CodeView/TypeRecordMapping.h
+++ include/llvm/DebugInfo/CodeView/TypeRecordMapping.h
@@ -25,6 +25,8 @@
   explicit TypeRecordMapping(BinaryStreamReader &Reader) : IO(Reader) {}
   explicit TypeRecordMapping(BinaryStreamWriter &Writer) : IO(Writer) {}
 
+  using TypeVisitorCallbacks::visitTypeBegin;
+
   Error visitTypeBegin(CVType &Record) override;
   Error visitTypeEnd(CVType &Record) override;
 
Index: include/llvm/DebugInfo/CodeView/TypeSerializer.h
===================================================================
--- include/llvm/DebugInfo/CodeView/TypeSerializer.h
+++ include/llvm/DebugInfo/CodeView/TypeSerializer.h
@@ -92,6 +92,8 @@
   TypeIndex insertRecordBytes(ArrayRef<uint8_t> &Record);
   TypeIndex insertRecord(const RemappedType &Record);
   Expected<TypeIndex> visitTypeEndGetIndex(CVType &Record);
+    
+  using TypeVisitorCallbacks::visitTypeBegin;
 
   Error visitTypeBegin(CVType &Record) override;
   Error visitTypeEnd(CVType &Record) override;